Patent application number | Description | Published |
20090318045 | Functional Surface Finish and Method of its Application to a Material Surface - The present invention relates to a functional surface finish comprising a finishing agent having a functional part and a surface-anchoring part, wherein said functional part and said surface-anchoring part are coupled via a thermally reversible covalent bond. The present invention further relates to compositions for finishing a surface, to methods of finishing a material surface, to material surface comprising a surface finish and to a method of re-functionalizing a material surface. | 12-24-2009 |
20120285469 | TEXTURED/POLISHED RESPIRATORY MASK SEAL AND MASK - A seal for a respiratory mask that includes a first end portion adapted to be coupled to a mask shell, a second end portion for sealing engagement with a face of a patient, and a sidewall extending between the first end portion and the second end portion. At least a portion of the second end portion includes a textured area having a predetermined pattern. The area of increased surface roughness provides the patient contacting portion of the seal with a silky feeling to maximize patient comfort and the effectiveness of the seal without impairing the sealing ability. | 11-15-2012 |
20140113986 | WATER-ABSORBING ELASTOMERIC MATERIAL - This invention relates to a rubbery or elastomeric polymer material taking up more than 5% by weight of water and at most 500% by weight of water after immersion in demineralized water at room temperature for a sufficient time to reach saturation, comprising: (a) repeating units from one or more hydrophobic organic monomers, and (b) repeating units from one or more monomers (a) being modified with one or more hydrophilic side groups. The rubbery or elastomeric polymer material may be in the form of a sheet, a foam, a coating adapted for adhesion to a substrate, or a fiber. This invention also relates to processes, polymerizable compositions, and foaming compositions for producing such rubbery or elastomeric polymer materials. | 04-24-2014 |
20140130804 | TEXTURED/POLISHED RESPIRATORY MASK SEAL AND MASK - A seal for a respiratory mask that includes a first end portion adapted to be coupled to a mask shell, a second end portion for sealing engagement with a face of a patient, and a sidewall extending between the first end portion and the second end portion. At least a portion of the second end portion includes a textured area having a predetermined pattern. The area of increased surface roughness provides the patient contacting portion of the seal with a silky feeling to maximize patient comfort and the effectiveness of the seal without impairing the sealing ability. | 05-15-2014 |
20140134416 | MEDICAL AND NON-MEDICAL DEVICES MADE FROM HYDROPHILIC RUBBER MATERIALS - This invention relates to medical, health care and non-medical devices comprising a rubbery or elastomeric polymer material taking up more than 5% by weight of water and at most 500% by weight of water after immersion in demineralized water at room temperature for a sufficient time to reach saturation. The material may be in the form of a foam, or in the form of a coating adapted for adhesion to a substrate, or in the form of a sheet, or in the form of a fiber, and may comprise: —repeating units from one or more hydrophobic organic monomers, and —repeating units from one or more monomers (a) being modified with one or more hydrophilic side groups. | 05-15-2014 |
20140349075 | ENGINEERED SURFACE FOR PROVIDING LOW FRICTION AND IMPROVED COMFORT ON DEVICES THAT CONTACT THE SKIN OR OTHER EXTERNAL TISSUE OF THE USER - An apparatus structured to contact external tissue, such as skin, of a user includes an elastomeric contacting portion that is structured to directly engage the external tissue. The contacting portion has an engineered surface ( | 11-27-2014 |
20150013682 | PATIENT INTERFACE DEVICE HAVING AN ENGINEERED SURFACE FOR PROVIDING LOW FRICTION AND IMPROVED COMFORT TO THE USER - A patient interface device includes an elastomeric contacting portion that is structured to directly engage the skin of the user. The contacting portion has an engineered surface that includes a plurality of non-random, predesigned surface features designed to reduce friction and improve user comfort. In one implementation, the pitch between each immediately adjacent pair of the surface features is less than or equal to a predetermined maximum pitch value, and the height of each of the surface features is less than or equal to a predetermined maximum height value. | 01-15-2015 |
20150040909 | USER INTERFACE DEVICE PROVIDING FOR IMPROVED COOLING OF THE SKIN - A number of user interface device embodiments are disclosed that provide for increased cooling of the skin covered by the mask and/or increased flushing of gasses, including CO | 02-12-2015 |
Patent application number | Description | Published |
20100081587 | Microemulsifiers and methods of making and using same - A method comprising contacting a zwitterionic surfactant, co-surfactant, and water to form a microemulsifier, and contacting the microemulsifier with an oleaginous fluid under low shear conditions to form a microemulsion. A method comprising introducing a first wellbore servicing fluid comprising at least one oleaginous fluid into a wellbore, wherein the first wellbore servicing fluid forms oil-wet solids and/or oil-wet surfaces in the wellbore, and contacting the oil-wet solids and/or oil-wet surfaces in the wellbore with a second wellbore servicing fluid comprising a zwitterionic surfactant, a co-surfactant, and a brine to form a microemulsion. | 04-01-2010 |
20110009299 | EMULSION STABILIZING AGENTS FOR DRILLING AND COMPLETION FLUIDS - Of the many methods presented herein, one method comprises: providing a stabilized emulsion composition formed by combining components that comprise: an oleaginous fluid, a fluid that is at least partially immiscible with the oleaginous fluid, and an emulsion stabilizing agent, wherein the emulsion stabilizing agent comprises a first ionic compound soluble in the oleaginous fluid or the fluid that is at least partially immiscible with the oleaginous fluid, and a second ionic compound with a charge of opposite sign of the first ionic compound and that is at least partially soluble in the opposite fluid as the first ionic compound, and placing the stabilized emulsion composition in a subterranean formation as part of a subterranean application. | 01-13-2011 |
20110021388 | Microemulsifiers and methods of making and using same - A method comprising contacting a zwitterionic surfactant, co-surfactant, and water to form a microemulsifier, and contacting the microemulsifier with an oleaginous fluid under low shear conditions to form a microemulsion. A method comprising introducing a first wellbore servicing fluid comprising at least one oleaginous fluid into a wellbore, wherein the first wellbore servicing fluid forms oil-wet solids and/or oil-wet surfaces in the wellbore, and contacting the oil-wet solids and/or oil-wet surfaces in the wellbore with a second wellbore servicing fluid comprising a zwitterionic surfactant, a co-surfactant, and a brine to form a microemulsion. | 01-27-2011 |
20110048718 | Treatment Fluids Comprising Entangled Equilibrium Polymer Networks - The invention relates to compositions and methods relating to treatment fluids that comprise entangled equilibrium polymer networks in subterranean applications. In one aspect, the invention provides a method comprising: providing a treatment fluid comprising at least one entangled equilibrium polymer network, and placing the treatment fluid in a subterranean formation. | 03-03-2011 |
20110053812 | Polymeric Additives for Enhancement of Treatment Fluids Comprising Viscoelastic Surfactants and Methods of Use - Polymeric additives used with viscoelastic surfactants, fluids comprising such additives and viscoelastic surfactants, and associated methods of use, are provided. In one embodiment, the methods comprise: providing a treatment fluid that comprises an aqueous base fluid, a viscoelastic surfactant, and an amphiphilic polymer, the amphiphilic polymer comprising a hydrophobic component, and a hydrophilic component comprising at least 15 monomer units; and introducing the treatment fluid into at least a portion of a subterranean formation. | 03-03-2011 |
20110160103 | Compressible Packer Fluids and Methods of Making and Using Same - A method of servicing a wellbore comprising placing a composition comprising a surfactant, brine, an oleaginous fluid, and optionally a co-surfactant in an annular space of the wellbore, wherein the composition forms a microemulsion under low shear conditions. | 06-30-2011 |
20110254553 | Electrically conductive oil-based drilling fluids - A method of servicing a wellbore comprising placing an oil-based wellbore servicing fluid comprising an electrical conductivity enhancer into the wellbore and logging the wellbore by resistivity imaging. A method of servicing a wellbore comprising introducing an oil-based drilling fluid to a wellbore, identifying a subsection of the wellbore for imaging, introducing to the subsection of the wellbore a oil-based wellbore servicing fluid comprising a carbon nanotube wherein the servicing fluid comprising the electrical conductivity enhancer mixes with the oil-based drilling fluid; and imaging the subsection of the wellbore. | 10-20-2011 |
20120000708 | Surfactant Additives Used to Retain Producibility While Drilling - Of the many embodiments provided herein, one embodiment includes a method comprising: providing a drilling fluid comprising: an aqueous fluid; and a surfactant; and drilling a well bore in a subterranean formation comprising an oleaginous fluid using the drilling fluid, wherein the surfactant forms a micelle within the well bore; and removing an oil block in the formation. | 01-05-2012 |
20120004146 | Surfactant Additives Used to Retain Producibility While Drilling - A method comprises providing a drilling fluid comprising: an aqueous fluid; and a microemulsion surfactant; and drilling a well bore in a subterranean formation comprising an oleaginous fluid using the drilling fluid, wherein the microemulsion surfactant forms a microemulsion with the oleaginous fluid within the well bore. In accordance with the method, the subterranean formation has a retained producibility greater than about 50%. | 01-05-2012 |
20120024529 | Stimuli-Responsive High Viscosity Pill - A method comprises providing a treatment fluid having a first viscosity comprising an aqueous base fluid; a viscoelastic surfactant; and a stimuli-responsive water-soluble polymer; introducing the treatment fluid into a subterranean formation; and allowing the treatment fluid viscosity to change to a second viscosity in response to a stimulus. | 02-02-2012 |
20120073817 | Tethered Polymers Used to Enhance the Stability of Microemulsion Fluids - Of the methods provided in this invention, one method includes: providing a treatment fluid comprising: an aqueous fluid, a microemulsion surfactant, and an amphiphilic polymer, wherein the amphiphilic polymer comprises a hydrophobic component, and a hydrophilic component; and introducing the treatment fluid into a subterranean formation, wherein the microemulsion surfactant forms a microemulsion that comprises the amphiphilic polymer within the subterranean formation. | 03-29-2012 |
20120264657 | Emulsion Stabilizing Agents for Drilling and Completion Fluids - Stabilized emulsion compositions comprising an oleaginous fluid, a fluid that is at least partially immiscible with the oleaginous fluid, and, an emulsion stabilizing agent. The emulsion stabilizing agent comprises a first ionic compound soluble in the oleaginous fluid or the fluid that is at least partially immiscible with the oleaginous fluid and a second ionic compound with a charge of opposite sign of the first ionic compound and that is at least partially soluble in the opposite fluid as the first ionic compound. The first ionic compound and the second ionic compound are selected from the group consisting of: a cationic ionic surfactant, an anionic surfactant, a cationic polyelectrolyte, an anionic polyelectrolyte, and a combination thereof. | 10-18-2012 |
20130048281 | Wellbore servicing fluids and methods of making and using same - A method of servicing a wellbore comprising placing a composition comprising a microemulsion surfactant and a completion fluid into a wellbore, wherein the composition is substantially free of an organic solvent. A method of servicing a wellbore having a permeable zone comprising introducing a composition comprising a brine and a microemulsion surfactant to the wellbore proximate to the permeable zone wherein at least a portion of the composition enters the permeable zone and wherein the composition excludes an organic solvent. A wellbore servicing fluid comprising a microemulsion surfactant and a completion fluid. | 02-28-2013 |
20140329726 | Polymeric Additives for Enhancement of Treatment Fluids Comprising Viscoelastic Surfactants and Methods of Use - Polymeric additives used with viscoelastic surfactants, fluids comprising such additives and viscoelastic surfactants, and associated methods of use, are provided. In one embodiment, the methods comprise: providing a treatment fluid that comprises an aqueous base fluid, a viscoelastic surfactant, and an amphiphilic polymer, the amphiphilic polymer comprising a hydrophobic component, and a hydrophilic component comprising at least 15 monomer units; and introducing the treatment fluid into at least a portion of a subterranean formation. | 11-06-2014 |